No 1 Geruajhar is a village in Harisinga tehsil in district of Udalguri, Assam, India. As per the data provided by Census of India in 2011, total population of No 1 Geruajhar was 1,603 which includes 843 males and 760 females. No 1 Geruajhar covers 190.17 ha area. Pincode of No 1 Geruajhar is N/A.